Pin-joint for articles of jewelry.



F. P. BARNEY.

PIN JOINT FOR ARTICLES OF JEWELRY.

APPLICATION IILED JULY 5, 1912.

1,071,1 32. v Patented Aug. 26, 1913.

WITNESSES. INVENTORv %W Prank PBarrzcy LiMEw 'W ATTY.

FRANK P. BARNEY, 0F CHAR'ILEY, MASSACHUSETTS.

PIN-JOINT FOR ARTICLES OF JEWELRY.

Specification of Letters Patent.

Application filed July 5, 1912.

Patented Aug. 26,1913. Serial No. 707,664.

To all whom, it may concern:

Be it known that I, FRANK P. BARNEY, a citizen of the United States, residing at Chartley, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Pin-Joints for Articles of Jewelry, of which the following is a specification.

My present invention relates to and consists in the novel construction of pin-joints or hinges for bar-pins and other articles of jewelry employing a hinged pin-tongue, all as more fully hereinafter set forth and claimed.

In the accompanying sheet of drawings, Figure 1 represents a side elevation of an inexpensive type of bar-pin embodying my improvement; Fig. 2 is a corresponding top plan view of it; Fig. 8 is an end view of the pin, enlarged, viewed from the left of Fig. 1; Fig. 4 is a partial longitudinal sectional view, taken substantially on line etl of Fig. 3, the corresponding portion of the pin-tongue being in elevation; Fig. 5 is an inverted plan view, showing the apertured extension member of the struck-up sheet metal blank before bending, a pin-tongue being loosely positioned therein; Fig. 6 represents an inverted sectional plan view, taken on line 6--6 of Fig. 4. This figure, shown greatly enlarged, is taken through the finished joint, the corresponding part or pivot-end of the pin-tongue being in elevation. Fig. 7 is a side elevation, showing the condition of the parts after the said extension has been subjected to the initial bending operation, preliminary to the completion of the joint shown in Fig. 1; and Fig. 8 is a corresponding horizontal sectional view, taken on line 88 of Fig. 7.

The following is a detailed description of my improved pin-joint, including the manner of its construction and use.

While my invention relates more particularly to pin-joints proper, as first stated, I have represented in Figs. 1 and 2 one form of a completed solderless bar-pin in which my invention is employed. In this instance, the article consists of two individual members only, viz., the front or bar having inwardly bent integral end portions and a pintongue of normal construction movably mounted therein. I prefer to use goldplated sheet-metal stock, although precious metal, or even base metal, may be employed. The pin-tongue, however, is preferably formed of harder and somewhat resilient metal.

A, in the drawings, indicates a bar-pin complete, provided with my improved pinjoint. The bar member or plate is struckup or cut from suitable sheet-stock, as just stated, in any well-known way. The ends of the front or bar proper, a, are provided with integral extensions; that at the front end being bent to form a suitable catch or keeper a for the free or pointed end portion of a pin-tongue n. The opposite or rear portion of the bar a has an integral extension 6, of novel construction, which lattei; in connection with the pin-tongue employed. constitutes the subject matter of this application. The said extension part 7) (see Fig. 5) is provided. with an elongated opening 0 closed at the ends. The said part b is re cessed on its underside to form grooves b b alining with the respective outer and inner ends of the opening; the parallel outer connecting front and rear side members (Z, (P, respectively, adjacent the opening, may be slightly depressed, as at (P, in order to readily receive and position or centralize the respective pintles n of the pin-tongue during the ear-forming process. I prefer to employ a pin-tongue having all its members integral; that is, one in which the head or pivot end a is cylindrical and having the tongue part proper, n extending therefrom at right angles, its free end portion terminating in a sharpened point adapted to engage said catch member a and also having the pivot pintles n disposed on opposite faces of the head part 91. the axes of the parts 72 n being in alinement.

In order to conceal the presence of inferior or base metal in the finished joint where the edges meet, in case gold-plated stock is employed, and to prevent oxidation at that point, the outer longitudinal edges of the member I) may be beveled, as indicated at (P, Figs. 5 and 6.

In producing my improved pin-joint the rear end portion of the bar or front is provided with an extension I), preferably integral therewith, substantially as represented (inverted) in Fig. 5, a pin-tongue is inserted downwardly through the opening 0 until arrested and centralized by the engagement of the pins lateral pintles n with the adjacent bearing surfaces 6Z3 of the respective connecting members (Z, (P, see Fig. 5; the part b is next folded upon itself by suitable tools to a substantially U-shaped form and having the pin-tongue freely suspended therefromsee Fig. 7 The completely formed joint is efi'ected by positioning the incomplete article (shown in Figs. 7 and 8) between suitably constructed and positioned die and plunger members of a power press, which readily converts the work into the finished hinge-joint indicated in Figs. 1, 3,

4, and 6. The latter figure, greatly enlarged,

represents, in transverse horizontal section, the sa1d beveled portions (Z of the respectlve connections (Z, (Z then being in contact, and

=wholly concealing the pintles and at the same time producing a practically invisible vertical seam s, Fig. 1.

The letters 00 designate theouter edge of the normal front connecting part (Z before and after the slotted member Z) is acted upon, and 0 -0 the outer edge of the corresponding normal back part (P. The inwardly facing pair of arrows contiguous to the edge 0+0 of said member (Z, and similar arrows of the other edge 0 0 of member (Z (Fig. 8) indicate the flow or movement of the metal in transforming it into the completed or finished form shown in Fig. 6,

"thereby, as before stated, substantially embedding and concealing the pintles n and also causing the edges 00 and 0 0 of the respective sides to abut and form front and rear end seams 8, extending downwardly at substantially right angles to the underside of the front in a plane common to both.

I claim as my invention: 1. In a solderless bar-pin or analogous article of jewelry, the combination of the bar proper constituting the front member having a catch or keeper located at one end thereof and integral therewith, a longitudinally slotted extension disposed at the opposite end of the bar and integral with it, bent and inturned to form a lug or ear having a substantially hemispherical shape extending at right angles from the underside of the bar, the abutting edges constituting a practically invisible seam, and a movable pintongue having its head portion inclosed in said lug, the tongue part at the same time extending outward through said slot and adapted to engage the catch.

2. The improved solderless pin-joint for bar-pins and the like, the same consisting of an infolded extension element integral with the pins front or body portion and disposed at the rear or hinge end thereof; said extension having its outer longltudinal edges inwardly beveled and also provided with an arcuate slot through its wall, a headed pintongue movably mounted in said slot provided with oppositely disposed lateral pintles having said extension encircling and concealing the pintles, and having the said beveled edges of the extension forming a close fit for the pintle ends and at the same time making a practically invisible joint at that point.

3. In a bar-pin, the combination of an integral or one-piece front bar member having the outer longitudinal parallel edges of its rear end portion inwardly beveled and bent bodily to a substantially hemispherical shape to form a lug or ear, the said edges abutting to produce a substantially invisible Copies 0:. this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. e 

